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Finding the Fourth Proportional to 14,353.13, 19,809.17 and 8,065.50

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Solution

The fourth proportional to 14,353.13, 19,809.17 and 8,065.50 is: 11,131.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,353.13 : 19,809.17 = 8,065.50 : x
  2. Step 2: Convert to fraction form
    14,353.13/19,809.17 = 8,065.50/x
  3. Step 3: Cross multiply
    14,353.13x = 19,809.17 × 8,065.50
  4. Step 4: Simplify right side
    14,353.13x = 159,770,880.80
  5. Step 5: Solve for x
    x = 159,770,880.80/14,353.13
  6. Step 6: Final answer
    x = 11,131.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.